Saving Data from for loop using ginput to create data.

I am using ginput to select locations of markers in video frames, however when it moves to the next frame it overwrites the data from the previous frame.

obj = VideoReader('Test.mp4'); nFrames=obj.NumberofFrames %nFrames will go in place of 2 in final code to run full length of video.

for k = 1: 2 %fill in the appropriate number this_frame = read(obj, k); thisfig = figure(); thisax = axes('Parent', thisfig); image(this_frame, 'Parent', thisax); title(thisax, sprintf('Frame #%d', k)); [x y] = ginput(3); data=[x y] end I've tried using this also but it gives an error that subscripted assigned indices are mismatched.

data= [] for data(end+1,:)=ginput(1); x=data(k,1) y=data(k,2) end Any help would be greatly appreciated.

[Image Analyst]

http://www.mathworks.com/matlabcentral/answers/13205-tutorial-how-to-format-your-question-with-markup